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  <title>Fetches all result rows as an associative array, a numeric array, or both</title>

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  <h1 class="refname">mysqli_result::fetch_all</h1>
  <h1 class="refname">mysqli_fetch_all</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.3.0)</p><p class="refpurpose"><span class="refname">mysqli_result::fetch_all</span> -- <span class="refname">mysqli_fetch_all</span> &mdash; <span class="dc-title">Fetches all result rows as an associative array, a numeric array, or both</span></p>

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 <div class="refsect1 description" id="refsect1-mysqli-result.fetch-all-description">
  <h3 class="title">说明</h3>
  <p class="para">面向对象风格</p>
  <div class="methodsynopsis dc-description">
   <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <span class="methodname"><strong>mysqli_result::fetch_all</strong></span>
    ([ <span class="methodparam"><span class="type">int</span> <code class="parameter">$resulttype</code><span class="initializer"> = MYSQLI_NUM</span></span>
  ] )</div>

  <p class="para rdfs-comment">过程化风格</p>
  <div class="methodsynopsis dc-description">
   <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <span class="methodname"><strong>mysqli_fetch_all</strong></span>
    ( <span class="methodparam"><span class="type"><a href="class.mysqli-result.html" class="type mysqli_result">mysqli_result</a></span> <code class="parameter">$result</code></span>
   [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$resulttype</code><span class="initializer"> = MYSQLI_NUM</span></span>
  ] )</div>

  <p class="para rdfs-comment">
   <span class="function"><strong>mysqli_fetch_all()</strong></span> fetches all result rows and returns the result 
   set as an associative array, a numeric array, or both.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-mysqli-result.fetch-all-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    <dt>
<em><code class="parameter">
result</code></em></dt>
<dd>
<p class="para">仅以过程化样式：由
<span class="function"><a href="mysqli.query.html" class="function">mysqli_query()</a></span>，<span class="function"><a href="mysqli.store-result.html" class="function">mysqli_store_result()</a></span> 或
<span class="function"><a href="mysqli.use-result.html" class="function">mysqli_use_result()</a></span>返回的结果集标识。</p></dd>

    
     <dt>
<em><code class="parameter">resulttype</code></em></dt>

     <dd>

      <p class="para">
       This optional parameter is a constant indicating what type of array
       should be produced from the current row data. The possible values for
       this parameter are the constants <strong><code>MYSQLI_ASSOC</code></strong>,
       <strong><code>MYSQLI_NUM</code></strong>, or <strong><code>MYSQLI_BOTH</code></strong>.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-mysqli-result.fetch-all-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns an array of associative or numeric arrays holding result rows.
  </p>
 </div>


 <div class="refsect1 mysqlnd" id="refsect1-mysqli-result.fetch-all-mysqlnd">
   <h3 class="title">仅 MySQL 原生驱动</h3>

  <p class="para">
   仅可用于 <a href="book.mysqlnd.html" class="link">mysqlnd</a>。
  </p>

  <p class="para">
    As <span class="function"><strong>mysqli_fetch_all()</strong></span> returns all the rows as an
    array in a single step, it may consume more memory than some similar
    functions such as <span class="function"><a href="mysqli-result.fetch-array.html" class="function">mysqli_fetch_array()</a></span>, which
    only returns one row at a time from the result set. Further, if you
    need to iterate over the result set, you will need a looping
    construct that will further impact performance. For these reasons
    <span class="function"><strong>mysqli_fetch_all()</strong></span> should only be used in those
    situations where the fetched result set will be sent to another
    layer for processing.
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-mysqli-result.fetch-all-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="mysqli-result.fetch-array.html" class="function" rel="rdfs-seeAlso">mysqli_fetch_array()</a> - Fetch a result row as an associative, a numeric array, or both</span></li>
    <li class="member"><span class="function"><a href="mysqli.query.html" class="function" rel="rdfs-seeAlso">mysqli_query()</a> - 对数据库执行一次查询</span></li>
   </ul>
  </p>
 </div>


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